Tuesday volunteers at Laurelwood Arboretum worked hard getting the Sensory Garden at Laurelwood Arboretum ready for spring and the Rhododendron Festival. They spent the morning planting, weeding and fertilizing the raised beds and edge of the gardens. Photo by Elaine Fogerty. Volunteers are welcome to work in the park any Tuesday or Friday through October. Individuals can drop in anytime and do not need to sign up in advance. They should bring water, small hand tools and gardening gloves if they have them. Groups are asked to call 973-831-5675 or send an email to email@example.com to make arrangements in advance.